It looks like you have javascript turned off. This I had sex wif ma bf yesterday at 9:20pm and took the pill the following day at 4:00pm am I in any chance of getting pregnant but will be taking the 2nd pill in the next 12hours. Thanks. page on EmpowHER Women's Health works best with javascript enabled in your browser.

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When taken as directed, an emergency contraceptive pill is 95% effective in preventing pregnant. It is advisable to take the first dose as soon as possible and within 72 hours of unprotected intercourse. With some pills, you take the second dose 12 hours after the first dose.

You know it worked if you have vaginal bleeding within three weeks of taking the pill.

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